$ git clone -n https://src.fedoraproject.org/rpms/ghc-crypton-x509-store.git /var/lib/mock/f41-build-839898-160422/root/chroot_tmpdir/scmroot/ghc-crypton-x509-store
Cloning into '/var/lib/mock/f41-build-839898-160422/root/chroot_tmpdir/scmroot/ghc-crypton-x509-store'...
$ git fetch origin 1c4c62aaada9c5caf806c23324c4dda8947a5d3a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-crypton-x509-store
 * [new ref]         1c4c62aaada9c5caf806c23324c4dda8947a5d3a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c4c62a import rhbz#2300421